Simple and fast synthesis of LiFePO4-C composite for lithium rechargeable batteries by ball-milling and microwave heating

被引：113
作者：
Song, Min-Sang
Kang, Yong-Mook
Kim, Jin-Ho
Kim, Hyun-Seok
Kim, Dong-Yung
Kwon, Hyuk-Sang
Lee, Jai-Young
机构：
[1] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon, South Korea
[2] Samsung SDI Co Ltd, Energy Lab, Corp R&D Ctr, Yongin, Gyeonggi Do, South Korea
[3] Konkuk Univ, Dept Fus Technol, Seoul, South Korea
来源：
JOURNAL OF POWER SOURCES | 2007年 / 166卷 / 01期
关键词：
LiFePO4-C composite; vibrant type ball-milling; microwave heating; particle size; carbon distribution; discharge capacity; lithium battery;
D O I：
10.1016/j.jpowsour.2006.12.092
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A very simple and rapid method for synthesizing LiFePO4-C composite has been developed by vibrant type ball-milling for 30 min and microwave heating for 2-4 min. X-ray diffraction and Mossbauer spectroscopy verify that well-crystallized LiFePO4 without Fe3+ impurities is obtained. From laser particle size analysis and transmission electron microscopy, it is confirmed that a LiFePO4-C composite with fine and uniform particle size (mean particle size <= 0.640 mu m, D75 in volume distribution <= 0.592 mu m) and with extremely uniform carbon distribution is prepared by vibrant type ball-milling and microwave heating. The LiFePO4-C delivers a high initial discharge capacity of 161 mAh g(-1) at C/10 and shows very stable cycling behaviour. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：260 / 265
页数：6
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